Phenylpyrazolecarboxylic acid derivatives, their preparation, and their use as plant-growth regulators and safeners

ABSTRACT

Compounds of the formula I ##STR1## in which R denotes halogen, hydroxyl, cyano, nitro, (substituted) alkyl, (substituted) alkoxy, (halo)alkylthio, carboxyl, alkoxycarbonyl; (halo)alkylsulf(inyl)(onyl) or -(onyloxy); (halo)phenyl or (halo)phenoxy; X in the 3- or 5-position denotes a (thio)carboxylic acid--or an optionally heterocyclic radical which is derived therefrom; Y denotes halogen, m denotes the number 0 or 1, and n denotes a number from 0 to 5, have valuable plant growth-regulating properties and are suitable, in addition, as safeners for protecting crop plants against phytotoxic side effects of herbicides.

DESCRIPTION

Phenylpyrazolecarboxylic acid derivatives, their preparation, and their use as plant-growth regulators and safeners.

Phenylaminopyrazoles having a herbicidal action have been disclosed, for example by EP-A 138,149.

Novel phenylpyrazolecarboxylic acid derivatives have been found which have surprisingly excellent plant growth-regulating properties and, in addition, reduce phytotoxic side effects of herbicides on crop plants.

The present invention therefore relates to compounds of the formula I ##STR2## in which

R, in each case independently of one another, denote halogen, hydroxyl, cyano, nitro, (C₁ -C₄)alkyl, halo(C₁ -C₄)alkyl, (C₁ -C₄)alkoxy(C₁ -C₄)alkyl, (C₁ -C₆)alkoxy, (C₁ -C₆)alkoxy(C₁ -C₄)alkoxy, halo(C₁ 14 C₆)alkoxy, (C₁ -C₄)alkylthio, halo(C₁ -C₄)alkylthio, carboxyl, (C₁ -C₄)alkoxycarbonyl, (C₁ -C₄)alkylsulfinyl, halo(C₁ -C₄)alkylsulfinyl, (C₁ -C₄)alkylsulfonyl, halo(C₁ -C₄)alkylsulfonyl, (C₁ -C₄)alkylsulfonyloxy, halo(C₁ -C₄)alkylsulfonyloxy, phenyl, halophenyl, phenoxy or halophenoxy,

X is oriented in the 3- or 5-position of the pyrazole ring and denotes as radical of the formula ##STR3##

Y denotes halogen,

Z denotes O or S,

U denotes O, S or N-R⁶,

R¹ denotes hydrogen, (C₁ -C₁₂)alkyl, (C₁ -C₁₂)alkyl which is monosubstituted or polysubstituted by halogen and/or monosubstituted or disubstituted by hydroxyl, (C₁ -C₆)alkoxy, (C₁ -C₄)alkoxy-(C₁ -C₄)alkoxy, (C₁ -C₄)alkylthio, (C₁ -C₄)alkylsulfinyl, (C₁ -C₄)alkylsulfonyl, mono- or di-(C₁ -C₄ -alkyl)amino, cyano, aminocarbonyl, (C₁ -C₄)alkylcarbonyl, (C₁ -C₄ -alkoxy)carbonyl, cyclo(C₃ -C₇)alkyl, tri(C₁ -C₄)alkylsilyl, benzyloxy, benzyloxyethoxy, phenyl, phenyl which is substituted by halogen or (C₁ -C₄)alkyl, phenoxy or phenylthio which both are unsubstituted or substituted by halogen or (C₁ -C₄)alkyl; by oxiranyl, tetrahydrofuryl, triazolyl, pyridinyl, imidazolyl, carboxyl, carboxylate with a cation which can be employed for agriculture, or the --O--N═C(CH₃)₂ radical; or denotes (C₃ -C₆)-alkenyl, halo(C₃ -C₆)alkenyl, CYC10(C₃ -C₇)alkyl which is unsubstituted or substituted by halogen or (C₁ -C₄)-alkyl; cyclo(C₅ -C₇)alkenyl which is unsubstituted or substituted by halogen or (C₁ -C₄)alkyl; or denotes (C₃ -C₆)-alkynyl, 1,2-epoxyprop-3-yl, phenyl or phenyl which is monosubstituted or disubstituted by halogen, nitro, cyano, (C₁ -C₄)alkyl, (C₁ -C₄ -alkoxy)carbonyl or (C₁ -C₄)alkoxy; or denotes (C₁ -C₄ -alkyl)carbonyl, phenylcarbonyl with a phenyl ring which is unsubstituted or substituted by halogen, nitro, cyano or (C₁ -C₄)alkyl; or denotes a radical of the formula ##STR4## or a cation which can be employed for agriculture,

R² denotes (C₁ -C₁₂)alkyl or (C₁ -C₁₂)alkyl which is monosubstituted or disubstituted by (C₁ -C₄)alkoxyethoxy, cyclo(C₃ -C₆)alkyl, benzyloxy, phenyl, phenoxy, (C₁ -C₄)alkylthio, (C₁ -C₄ -alkoxy)carbonyl, carboxyl or carboxylate with a cation which can be employed for agriculture,

R³, in each case independently of one another, denote (C₁ -C₆)alkyl, phenyl or (C₃ -C₆)alkenyl,

R⁴ denotes hydrogen, (C₁ -C₁₂)alkyl or (C₁ -C₁₂)alkyl which is monosubstituted or disubstituted by (C₁ -C₆)-alkoxy, (C₁ -C₄)alkoxyethoxy, hydroxyl, hydroxyimino, (C₁ -C₄)alkoxyimino, halogen, cyclo(C₃ -C₆)alkyl, benzyloxy, cyano, aminocarbonyl, carboxyl, (C₁ -C₄ -alkoxy)carbonyl, formyl, phenyl or phenoxy, or denotes phenyl or phenyl which is monosubstituted or disubstituted by halogen, nitro, cyano, (C₁ -C₄)alkyl or (C₁ -C₄)alkoxy; or denotes (C₃ -C₆)alkenyl, (C₃ -C₆)cycloalkyl, or a radical of the formula

    --NR.sup.3 R.sup.12, --O--R.sup.6, --NH--CONH.sub.2, --NH--CS--NH.sub.2 or --SO.sub.2 R.sup.13 or

R³ and R⁴, together with the nitrogen atom to which they are bound, denote a saturated or unsaturated, three- to seven- membered ring which can be benzo-fused and which contains up to three heteroatoms from the group comprising O, N or S and is unsubstituted or substituted by (C₁ -C₄)alkyl or halogen and can contain a carbonyl group,

R⁵ denotes H, (C₁ -C₆)alkyl or phenyl, or in the case where X=--CS--OR⁵, denotes a cation which can be employed for agriculture,

R⁶, in each case independently of one another, denote H, (C₁ -C₄)alkyl or benzyl,

R⁷, in each case independently of one another, denote h,(C₁ -C₁₂)alkyl which is unsubstituted or substituted by phenyl which is unsubstituted or substituted by halogen, nitro, cyano, (C₁ -C₄)alkyl or (C₁ -C₄)alkoxy, by hydroxyl, cyano, (C₁ -C₄ -alkoxy)carbonyl, (C₁ -C₄)alkylthio, (C₁ -C₄)alkoxy, cyclo(C₅ -C₇)alkyl or benzyloxy, or denote (C₃ -C₆)alkenyl, halo(C₃ -C₆)alkenyl, (C₃ -C₆)alkynyl, cyclo(C₅ -C₈)alkyl, cyclo(C₅ -C₆)alkenyl, (C₁ -C₆ -alkyl)carbonyl, halo(C₁ -C₆ -alkyl)carbonyl, [(C₁ -C₆ -alkyl)amino]carbonyl, benzoyl, halobenzoyl or methylbenzoyl,

R⁸, in each case independently of one another, denote (C₁ -C₆)alkyl which is unsubstituted or substituted by phenyl, cyclo(C₅ -C₇)alkyl, (C₁ -C₄)alkoxy, (C₁ -C₄)alkylthio or halogen, or two radicals R⁸, together with Z and the carbon atom to which they are bound, denote a 5- or 6-membered saturated heterocyclic ring which is unsubstituted or substituted by (C₁ -C₄)-alkyl, hydroxy(C₁ -C₄)alkyl, halo(C₁ -C₄)alkyl or phenyl;

R⁹, in each case independently of one another, denote H, halogen, (C₁ -C₄)alkyl, nitro or cyano,

R¹⁰, in each case independently of one another, denote H, (C₁ -C₆)alkyl which is unsubstituted or substituted by (C₁ -C₄)alkoxy, triazolyl or imidazolyl; or denote cyclo(C₃ -C₆)alkyl, (C₃ -C₆)alkenyl, phenyl or benzyl, or in the radical --N═C(R¹⁰)₂ both radicals R¹⁰, together with the carbon atom to which they are bound, denote a cyclo(C₅ -C₇)alkyl which is unsubstituted or substituted by methyl or halogen,

R¹¹ denotes (C₁ -C₄)alkyl, phenyl, (C₁ -C₆ -alkyl)carbonyl, benzyl, benzoyl, halobenzyl, halobenzoyl or methylbenzoyl,

R¹² denotes H, (C₁ -C₄)alkyl, formyl, (C₁ -C₆ -alkyl)carbonyl, benzoyl, halobenzoyl, methylbenzoyl or trihaloacetyl,

R¹³ denotes (C₁ -C₄)alkyl, phenyl, or methylphenyl,

m denotes 0 or 1,

n denotes an integer from 0 to 5, in particular from 1 to 3,

p denotes an integer from 0 to 4, in particular from 0 to 2, and

q denotes an integer from 0 to 6, in particular from 0 to 3,

and the salts and quaternization products thereof which are acceptable for agricultural purposes.

The salt formation or quaternization here occurs on the basic nitrogen atom of the pyrazole ring. Salt formation or quaternization is not possible when R¹ or R⁵ denotes a cation or R, R¹ or R² contains a carboxylate group.

Preferred compounds of the formula I are, in particular, those in which R denotes halogen, (C₁ -C₄)alkyl, halo(C₁ -C₄)alkyl or (C₁ -C₄)alkoxy; X denotes CN, --COOR¹, CO--SR² or --CONR³ R⁴ ; Y denotes halogen; R¹ and R² denotes H, (C₁ -C₄)alkyl, (C₂ -C₄)alkenyl, (C₂ -C₄)alkynyl, (C₁ -C₄)alkoxy-(C₁ -C₄)alkyl or a cation; R³ and R⁴ denote H or (C₁ -C₄)alkyl, m denotes 0 or 1, and n denotes 1 to 3. Compounds where R_(n) =2,6-dialkyl, mono- or di-halo or mono-trifluoromethyl are of particular interest here.

The radical Y is oriented, in particular, in the 4-position of the pyrazole ring.

Halogen is taken to mean F, Cl, Br or I, in particular F, Cl or Br.

Halo(C₁ -C₄)alkyl contains 1 to 5, in particular 1 to 3, chlorine or fluorine atoms; the CF₃ radical is preferred.

Halogenated (C₁ -C₁₂)alkyl contains, in particular, 1 to 13 chlorine or fluorine atoms; this includes, for example, the 2,2,2-trichloroethyl, 4-chlorobutyl, 2,2,2-trifluoroethyl, 1,1,1,3,3,3-hexafluoroprop-2-yl, 2,2,3,4,4,4-hexafluorobutyl and 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooct-1-yl radicals.

Halo(C₁ -C₆)alkylthio, halo(C₁ -C₄)alkylsulfinyl, halo(C₁ -C₄)alkylsulfonyl and halo(C₁ -C₄)alkylsulfonyloxy in each case contain, in particular, 1 to 9 chlorine or fluorine atoms; halogenated (C₃ -C₆)alkenyl contains, in particular, 1 to 3 chlorine or fluorine atoms.

Halophenyl, halobenzyl and halobenzoyl contain, in particular, 1 to 3 fluorine, chlorine or bromine atoms.

Trihaloacetyl is taken to mean, in particular, trichloroacetyl and trifluoroacetyl.

In the case where the --NR³ R⁴ radical (for X═CO--NR³ R⁴) forms a heterocyclic ring, this is taken to mean, for example, piperidine, morpholine, 2,6-dimethylmorpholine, piperazine, triazole, imidazole, pyrazole, thiazole and benzimidazole.

In the case where, in the substituents listed--in addition to the pyrazole ring--further basic nitrogen atoms occur, multiple salt formation or quaternization is also possible.

All inorganic or organic acids which are capable, as a consequence of their pKs value, of salt formation, for example hydrohalic acids, nitric acid, sulfuric acid, phosphoric acid, phosphonic acids, sulfonic acids, haloacetic acids or oxalic acid, are suitable for preparing the salts.

Quaternization products are taken to mean the products of the reaction of alkyl, alkylthioalkyl, alkoxyalkyl, in particular (C₁ -C₆)alkyl and phenylacyl, optionally substituted, in particular halogenated, in the phenyl radical, halides. The quaternization products of the compounds of the formula I are prepared by generally conventional methods.

Possible cations for R¹, R² or R⁵ which can be employed in agriculture are metallic cations, for example alkali metal or alkaline-earth metal cations, such as Na, K or Mg, or organic cations, such as organically substituted ammonium, organically substituted phosphonium, sulfonium or sulfoxonium, or other nitrogen cations.

Organically substituted ammonium denotes primary, secondary, tertiary or quaternary, aliphatic, aromatic or heteroaromatic ammonium which may contain 1 to three nitrogen atoms. The nitrogen atoms of the amine can in this case also be part of a cyclic system. Examples of such ammonium salts which may be mentioned are: mono-, di-, tri- or tetra[(C₁ -C₆)alkyl]ammonium, such as isopropylammonium, butylammonium, stearylammonium or triethylammonium, mono-, di- or tri[(C₁ -C₄)alkoxy(C₁ -C₄)alkyl]ammonium or mono-, di-, or tri[(C₁ -C₆)alkanol]ammonium, such as methoxyethylammonium, methoxypropylammonium, triethanolammonium or tripropanolammonium, or ammonium compounds containing mixed radicals, such as tert.-butyldiethanolammonium, triethylbenzylammonium, hydroxyethyltrimethylammonium or chloroethyltrimethylammonium, or allylammonium, diallylammonium, cyclohexylammonium, menthanylammonium, aminoethylammonium, ethylendiammonium, benzohydrylammonium, pyrrolidinium, morphilinium, 3-pyridylammonium, piperidinium or piperazinium, or an ammonium which is derived from an amino acid or its ester, such as [NH₃ --CH₂ --COOCH₃ ]⁺.

Organically substituted phosphonium, organic sulfonium or organic sulfoxonium contain aliphatic or arylaliphatic radicals as specified for ammonium.

Other nitrogen cations are, for example, hydrazonium, hydroxylammonium, guanidinium and aminoguanidinium, or the substitution products thereof.

The invention furthermore relates to a process for the preparation of the compounds of the formula I, wherein a compound of the formula II ##STR5## in which R¹⁴ denotes (C₁ -C₆)alkyl, is reacted with a compound of the formula III ##STR6## and is subsequently derivatized, if appropriate.

The process is carried out at 0° to 120° C. in an organic solvent, if appropriate in the presence of an organic acid, such as p-toluenesulfonic acid or methanesulfonic acid. Solvents which can be employed are polar compounds, such as alcohols, for example ethanol or methanol, organic acids, such as glacial acetic acid, chlorinated hydrocarbons, such as dichloroethane, or aromatic solvents, such as toluene or xylene.

During the reaction, compounds of the formulae IVa and IVb ##STR7## are produced as intermediates. These intermediates can be isolated and subsequently cyclized under the conditions described above. In the direct further reaction, mixtures of the compounds of the formula I, i.e. the compounds of the formulae Ia and Ib, are generally obtained alongside one another. ##STR8## The compounds of the formulae (Ia) and (Ib) can be derivatized by conventional processes at the --COOR¹ group or by halogenating the pyrazole radical.

Thus, the pyrazoles of the formulae Ia and Ib can be halogenated at the 4-position of the pyrazole radical under conventional aromatic halogenation conditions, see Houben-Weyl, Methoden der organischen Chemie [Methods of Organic Chemistry], volume 5/3, pp. 503 ff, volume 5/4, pp. 13 ff (1962). For derivatization, the --COOR¹ radical is furthermore converted in a known fashion into other radicals mentioned for X, for example by saponification, esterification, transesterification, amidation, salt-formation etc., as described, for example, in German Offenlegungsschriften 3,44,918 and 3,442,690, or salt-formation or quaternization takes place in a conventional fashion on the basic nitrogen atom of the pyrazole ring.

The starting compounds of the formula II can be obtained by reaction of the compounds of the formula V with compounds of the formula VI ##STR9## in the presence of an organic auxiliary base (literature: Chem. Ber. 115, pp. 2466-2782 (1982)). R¹⁵ denotes a leaving group, such as Cl, Br or OSO₂ CF₃.

Auxiliary bases which can be employed are organic amines, such as triethylamine or pyridine. The process can be carried out between -20° and +30° C. The compounds of the formula II obtained can be further reacted directly without work-up. The starting compounds of the formula III can be prepared by conventional processes, see Houben-Weyl, Methoden der organischen Chemie [Methods of Organic Chemistry], vol. 10/2, p. 169 (1967).

The invention furthermore relates to the use of the compounds of the formula I as plant-growth regulators. Typical growth-regulating effects can be achieved using the compounds according to the invention. The compounds have a regulating effect on the plant's inherent metabolism and can thus be employed for influencing plant substances in a specific fashion and for simplifying harvesting, such as for initiating desiccation and inhibiting growth. In addition, they are suitable for general control and inhibition of undesired vegetative growth without at the same time killing the plants. Inhibition of vegetative growth plays an important part in many monocotyledon and dicotyledon crops since lodging can thereby be reducted or completely prevented. The growth-regulating activity of the compounds as growth inhibitors in cereals, corn, soybean, tobacco, cotton, field beans, rape, rice, sunflowers and grass, and their ability to increase the content of desired substances such as carbohydrates (for example sugar cane or millet crops) and protein in the case of crop plants should be particularly emphasized. Finally, the compounds exhibit a very great improvement in fruit abscission, in particular in citrus fruit.

A further solution of the object set are also plant growth-regulating agents which are distinguished by an active content of at least one of the compounds according to the invention. The application rate of the compounds of the formula I is generally 0.02 to 2.5 kg of active ingredient per ha, preferably 0.05 to 1.5 kg/ha. In practical use, the compounds according to the invention can also be advantageously combined, if desired, with known growth regulators or natural or vegetative hormones.

The invention furthermore relates to the use of the compounds of the formula I as safeners. Thus, it has been found that they reduce or completely prevent phytotoxic side effects of plant-protection agents, in particular herbicides, when used in crops of useful plants.

The compounds of the formula I can be applied together with other herbicides, and are then capable of antagonizing or completely neutralizing damaging side effects of these herbicides without impairing the herbicidal activity of these herbicides against weeds. This allows the area of application of conventional plant-protection agents to be very considerably widened. Such compounds, which have the property of protecting crop plants against phytotoxic damage by herbicides, are known as antidotes or "safeners".

Herbicides whose phytotoxic side effects can be reduced by means of the compounds of the formula I are, for example, carbamates, thiocarbamates, haloacetanilides, substituted phenoxy-, naphthoxy-and phenoxyphenoxycarboxylic acid derivatives and also heteroaryloxyphenoxycarboxylic acid derivatives, such as quinolyloxy-, quinoxalyloxy-, pyridyloxy-, benzoxazolyloxy- and benzothiazolyloxyphenoxycarboxylic acid esters, and furthermore dimedone oxime derivatives. Of these, phenoxyphenoxy- and heteroaryloxyphenoxycarboxylic acid esters are preferred. Suitable esters here are, in particular, lower alkyl, alkenyl and alkynyl esters.

The following herbicides may be mentioned as examples, without representing a limitation thereby:

(A) Herbicides of the (C₁ -C₄)alkyl, (C₂ -C₄)alkenyl and (C₃ -C₄)alkynyl phenoxyphenoxy- and heteroaryloxyphenoxycarboxylates, such as

methyl 2-(4-(2,4-dichlorophenoxy)-phenoxy)-propionate, methyl 2-(4-(4-bromo-2-chlorophenoxy)-phenoxy)propionate,

methyl 2-(4-(4-trifluoromethylphenoxy)-phenoxy)propionate,

methyl 2-(4-(2-chloro-4-trifluoromethylphenoxy)phenoxy)-propionate,

methyl 2-(4-(2,4-dichlorobenzyl)-phenoxy)-propionate, ethyl 4-(4-(4-trifluoromethylphenoxy)-phenoxy)-pent-2-enoate,

ethyl 2-(4-(3,5-dichloropyridyl-2-oxy)-phenoxy)propionate, propargyl 2-(4-(3,5-dichloropyridyl-2-oxy)-phenoxy)propionate,

trimethylsilylmethyl 2-(4-(3,5-dichloropyridyl-2-oxy)phenoxy)-propionate,

ethyl 2-(4-(6-chlorobenzoxazol-2-yloxy)-phenoxy)propionate,

ethyl 2-(4-(6-chlorobenzothiazol-2-yloxy)-phenoxy)propionate.

methyl 2-(4-(3-chloro-5-trifluoromethyl-2pyridyloxy)phenoxy)-propionate,

ethyl 2-(4-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenoxy)-propionate,

butyl 2-(4-(5-trifluoromethyl-2-pyridyloxy)-phenoxy)propionate,

ethyl 2-(4-(6-chloro-2-quinoxalyloxy)-phenoxy)propionate,

ethyl 2-(4-(6-fluoro-2-quinoxalyloxy)-phenoxy)propionate, and

ethyl 2-(4-(6-chloro-2-quinolyloxy)-phenoxy)propionate,

(B) chloroacetanilide herbicides, such as

N-methoxymethyl-2,6-diethylchloroacetanilide,

N-(3'-methoxyprop-2'-yl)-methyl-6-ethylchloroaacetanilide, and

N-(3-methyl-1,2,4-oxadiazol-5-ylmethyl)-2,6-chloracetanilide,

(C) thiocarbamates, such as

S-ethyl N,N-dipropylthiocarbamate or

S-ethyl N,N-diisobutylthiocarbamate,

(D) dimedone derivatives, such as

2-(N-ethoxybutyrimidoyl)-5-(2-ethylthiopropyl)-3-hydroxy-2-cyclohexen-1-one

2-(N-ethoxybutyrimidoyl)-5-(2-phenylthiopropyl)-3-hydroxy-2-cyclohexen-1-one,

2(1-allyloxyiminobutyl)-4-methoxycarbonyl-5, 5'-dimethyl-3-oxocyclohexenol,

2-(N-ethoxypropionamidoyl)-5-mesityl-3-hydroxy-2-cyclohexen-1one, and

2(N-ethoxybutrimidoyl)-3-hydroxy-5-(thian-3-yl)-2-cyclohexen-1-one.

The safener:herbicide amount ratio can vary within broad limits, in the range between 1:10 and 10:1, in particular between 2:1 and 1:10. The ideal amounts of each of herbicide and safener depend on the type of herbicide or safener used and on the species of the plant crop to be treated, and can be determined from case to case by appropriate trials.

The major areas of application for the use of safeners are, above all, cereal crops (wheat, rye, barley and oats), rice, corn, sorghum, but also cotton, sugar beet, sugar cane and soybean.

Depending on their properties, the safeners of the formula I can be used for pretreatment of the seed of the crop plant (seed dressing), introduced into the seed drills before sowing, or applied together with the herbicide before or after emergence of the plant. Pre-emergence treatment includes treatment of the cultivated area before sowing and treatment of sown cultivated areas, but before growth has occurred. For this purpose, tank mixes or ready formulations can be employed.

The present invention therefore also relates to a process for protecting crop plants against phytotoxic side effects of herbicides, wherein an effective amount of a compound of the formula I is applied before, after or at the same time as the herbicide.

The compounds of the formula I according to the invention can be applied in conventional formulations, if appropriate mixed with further active components or also together with a herbicide, as wettable powders, emulsifiable concentrates, sprayable solutions, dusts, dressings, dispersions, granules or microgranules.

Wettable powders are preparations which are uniformly dispersible in water and which contain, besides the active ingredient and, if appropriate, in addition to a diluent or inert substance, wetting agents, for example polyoxyethylated alkylphenoles, polyoxyethylated fatty alcohols or alkyl- or alkylphenylsulfonates, and dispersants, for example sodium ligninsulfonate, sodium 2,2'-dinaphthylmethane-6,6'-disulfonates, sodium dibutylnaphthalenesulfonate or sodium oleoylmethyltaurinate. They are prepared in a conventional fashion, for example by grinding and mixing the components.

Emulsifiable concentrates can be prepared, for example, by dissolving the active ingredient in an inert organic solvent, for example butanol, cyclohexanone, dimethylformamide, xylene or higher-boiling aromatics or hydrocarbons, with addition of one or more emulsifiers. In the case of liquid active ingredients, the solvent part can be omitted completely or partly. Emulsifiers which can be used are the following, for example: calcium salts of alkylarylsulfonic acids, such as Ca dodecylbenzenesulfonate, or nonionic emulsifiers, such as fatty acid polyglycol esters, alkylaryl polyglycol ethers, fatty alcohol polyglycol ethers, propylene oxide/ethylene oxide condensation products, alkyl polyglycol ethers, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters or polyoxyethylene sorbitol esters.

Dusts are obtained by grinding the active ingredient with finely divided, solid substances, for example talc or natural clays, such as kaolin, bentonite, pyrophillite or diatomaceous earth.

Granules can be prepared either by atomizing the active ingredient onto adsorptive, granulated inert material or by applying the active ingredient concentrates onto the surface of excipients such as sand or kaolinites, or of granulated inert material, by means of binders, for example polyvinyl alcohol, sodium polyacrylate, or alternatively mineral oils. Suitable active ingredients can also be granulated in the fashion which is conventional for the preparation of fertilizer granules--if desired mixed with fertilizers.

In wettable powders, the active ingredient concentration is about 10 to 90% by weight; the remainder to 100% by weight comprises conventional formulation components. In the case of emulsifiable concentrates, the active ingredient concentration can be about 10 to 80% by weight. Dustable formulations usually contain 5 to 20% by weight of acative ingredient, and sprayable solutions about 1 to 20% by weight. In the case of granules, the active ingredient content depends partly on whether the active compound is present in liquid or solid form and on which granulation auxiliaries, fillers etc. are used.

In addition, the active ingredient formulations mentioned optionally contain the adhesives, wetting agents, dispersants, emulsifiers, penetrants, solvents, fillers or excipients which are conventional in each case.

For application, the concentrates, present in commercially available form, are diluted, if appropriate, in a conventional fashion, for example using water in the case of wettable powders, emulsifiable concentrates, dispersions and, in some cases, also in the case of microgranules. Dust-form and granulated formulations, and also sprayable solutions, are usually not further diluted with additional inert substances before application.

The application rates required for the compounds of the formula I when used as safeners can vary within broad limits depending on the indication and herbicide use, and generally vary between 0.01 and 10 kg of active ingedient per hectare.

The following examples serve to illustrate the invention.

A. Formulation examples

(a) A dust is obtained by mixing 10 parts by weight of a compound of the formula I and 90 parts by weight of talc or inert substance and comminuting in a hammer mill.

(b) A wettable powder which is easily dispersible in water is obtained by mixing 25 parts by weight of a compound of the formula I, 64 parts by weight of kaolin-containing quartz as inert material, 10 parts by weight of potassium ligninsulfonate and 1 part by weight of sodium oleoylmethyltaurinate as wetting agent and dispersant and grinding in a pin disk mill.

(c) A dispersion concentrate which is easily dispersible in water is obtained by mixing 20 parts by weight of a compound of the formula I with 6 parts by weight of alkylphenol polyglycol ether ((R)Triton ×207), 3 parts by weight of isotridecanol polyglycol ether (8 EO) and 71 parts by weight of paraffinic mineral oil (boiling range, for example, about 255 to above 377° C.) and grinding in a ball mill to a fineness of below 5 microns.

(d) An emulsifiable concentrate is obtained from 15 parts by weight of the compound of the formula I, 75 parts by weight of cyclohexanone as solvent and 10 parts by weight of oxyethylated nonylphenol as emulsifier.

(e) A concentrate which is easily emulsified in water and which is made from a phenoxycarboxylic acid ester and an antidote (10:1) is obtained from

12.00% by weight of ethyl 2-[4-(6-chlorobenzoxazol-2-yloxy)-phenoxy]-propionate,

1.20% by weight of a compound of the formula I,

69.00% by weight of xylene,

7.80% by weight of calcium dodecylbenzenesulfonate,

6.00% by weight of ethoxylated nonylphenol (10 EO), and

4.00% by weight of ethoxylated castor oil (40 EO).

Formulation is carried out as specified under Example (a).

(f) A concentrate which is easily dispersible in water and which is made from a phenoxycarboxylic acid ester and an antidote (1:10) is obtained from

4.0% by weight of ethyl 2-[4-(6-chlorobenzoxazol2-yloxy)-phenoxyl]-propionate,

40.0% by weight of a compound of the formula I,

30.0% by weight of xylene,

20.0% by weight of cyclohexanone

4.0% by weight of calcium dodecylbenzenesulfonate, and

2.0% by weight of ethoxylated castor oil (40 EO).

B. Chemical examples Examples 1 and 2.

Ethyl 1-phenylpyrazole-5-(and 3)-carboxylate.

15 g of ethyl vinyl ether were added dropwise to 14 g of ethyl chloroformylformate at between 0° and 30° C., and the mixture was stirred for a further 20 hours at 20°-30° C. The reaction mixture was concentrated in a water-pump vacuum, and the residue was taken up in 100 ml of glacial acetic acid. 10.8 g of phenylhydrazine in 150 ml of glacial acetic acid were added dropwise to this solution at between 10° and 80° C., and the mixture was refluxed for 2 hours. The product obtained was then introduced into 1 liter of water and extracted twice with 300 ml of ethyl acetate. The organic extract was washed once with 100 ml of water, twice with 100 ml of saturated NaHCO₃ solution and again with 100 ml of water and dried over Mg₂ SO₄. After distillative separation, ethyl 1-phenylpyrazole-5-carboxylate, boiling point 100-102/0.5 torr (Example 1) and ethyl 1-phenylpyrazole-3-carboxylate, boiling point 125-128/0.5 torr (Example 2) were obtained. Yield: 10.5 g.

Example 3

1-Phenylpyrazole-5-carboxylic acid.

4.4 g of ethyl 1-phenylpyrazole-5-carboxylate from Example 1 were stirred for 6 hours at room temperature with 10 ml of 16.5% strength aqueous NaOH and 10 ml of ethanol; the ethanol was removed by distillation, the aqueous phase was extracted twice with 10 ml of toluene, and the pH was adjusted to 3 using concentrated HCl. The precipitate was filtered off under suction, washed with a little water and dried: 3.1 g of product of boiling point 182°-183° C. were obtained.

Example 4

Ethyl 1-(2,6-dichlorophenyl)-pyrazole-5-carboxylate.

145 g of ethyl vinyl ether were added dropwise to 137 g of ethyl chloroformylformate with cooling using ice/common salt; after warming to room temperature, the mixture was stirred for a further 20 hours. The volatile components were removed by distillation, and the residue was fractionated in a water-pump vacuum. Ethyl 4-ethoxy-2-oxobut-3-enoate of boiling point 140°-143° C./13 torr were obtained. 17.5 g of product were dissolved in 200 ml of toluene. 17.5 g of 2,6-dichlorophenylhydrazine were added at 0° C. were stirring. The mixture was slowly heated to boiling, and ethanol and water were removed in a water separator until the boiling point remained constant at 111° C. The residue was diluted with toluene, washed twice with 2 N hydrochloric acid, saturated hydrogen carbonate solution and water, dried, evaporated to dryness and recrystallized from ethanol. Yield: 18.3 g. Melting point: 51°-53° C.

Example 5

Ethyl 4-bromo-1-(2,6-dichlorophenyl)-pyrazole-5-carboxylate.

14.3 g of ethyl 1-(2,6-dichlorophenyl)-pyrazole-5-carboxylate from Example 4 were dissolved in 100 ml of glacial acetic acid, 10 g of Na acetate were added, and 4.5 g of bromine were added dropwise at room temperature. After 60 hours, the reaction mixture was poured into 1 liter of water, washed with water and recrystallized from ethanol. Yield: 8.2 g Melting point: 62°-65° C.

Examples 6 and 7

Cyclohexyl 1-(3-trifluoromethylphenyl)-pyrazole-5-(and 3)-carboxylate

15 g of ethyl vinyl ether were added dropwise to 19.5 g of cyclohexyl chloroformylformate at 0° C., the mixture wsa stirred at room temperature for 20 hours, and the volatile components were removed by distillation. 200 ml of toluene and 0.5 g of p-toluenesulfonic acid were added, and the mixture was heated for 2 hours on a water separator. A solution of 17.6 g of 3-trifluoromethylphenylhydrazine in 100 ml of toluene was added at 100° C., and the mixture was heated on a water separator until the distillate distilled over at a constant temperature of 111° C. The product was diluted with toluene, washed twice with 100 ml of 2 N HCl, twice with 100 ml of saturated NaHCO₃ solution and once with 100 ml of water and dried over MgSO₄, and the solution was evaporated to dryness. After column chromatography, cyclohexyl 1-(3-trifluoromethylphenyl)-pyrazole-5-carboxylate was obtained as a colorless oil, yield 8.2 g (Example 6), and cyclohexyl 1-(3-trifluoromethylphenyl)-pyrazole-3-carboxylate as an oil, yield 8.7 g (Example 7). The compounds were characterized by ¹ H NMR spectroscopy.

Examples 8 and 9

Methyl 1-(4-methylphenyl)-pyrazole-5(and 3)-carboxylate.

12.5 g of p-tolylhydrazine in 150 ml of glacial acetic acid were added to a solution of 16 g of methyl 4-ethoxy-2-oxobut-3-enoat in 100 ml of glacial acetic acid at 50° C. The mixture was stirred at 100° C. for 5 hours, poured into 1 liter of water, and extracted twice with 100 ml of ethyl acetate. The organic phase was washed with saturated NaHCO₃ solution and subsequently with water, and dried. After evaporating in a water-pump vaccum, the mixture was separated by distillation in a high vacuum. 4.1 g of methyl 1-(4-methylphenyl)-pyrazole-5-carboxylate of boiling point 116°-120° C./0.01 torr (example 8) and 5.3 g of methyl 1-(4-methylphenyl)-pyrazole-3-carboxylate of boiling point 138°-142° C./0.01 torr were obtained. The compounds were characterized by ¹ H NMR spectroscopy.

The compounds of the formula I shown in the table below are prepared by the procedure described in the examples above or are obtained by derivatization of the compounds described above.

                                      TABLE I                                      __________________________________________________________________________      ##STR10##                                                                     Example                                   m.p. (°C.)                    No.  R.sub.n      4-Y                                                                               X                    (b.p./torr)                          __________________________________________________________________________     10   H            H  5-COOK                                                    11   H            H  5-COONa                                                   12   "            "  5-COO.sup.⊖ NH.sup.⊕ (C.sub.2 H.sub.4                              OH).sub.3            131-132                              13   "            "  5-COO.sup.⊖ NH.sub.3.sup.⊕c-C.sub.6                                H.sub.11                                                  14   "            Br 5-COOC.sub.2 H.sub.5 59-61                                15   H            Br 3-COOC.sub.2 H.sub.5 75-87                                16   "            Br                                                                                 ##STR11##           Oil                                  17   H            Br 5-COO.sup.⊖ H.sub.2 N.sup.⊕c-C.sub.6                               H.sub.11             139-143                              18   H            Cl 5-COOC.sub.2 H.sub.5                                      19   "            "  5-COOH                                                    20   "            "  5-COOn-C.sub.12 H.sub.25                                  21   "            H  3-COOH               142-144                              22   "            "  3-COO.sup.⊖ NH(C.sub.2 H.sub.4 OH).sub.3                                                    Oil                                  23   "            Br 3-COOC.sub.2 H.sub.5                                      24   "            "  3-COOH                                                    25   "            "  3-COOnC.sub.6 H.sub.13                                    26   "            Cl 3-COOCH.sub.3        66-68                                27   "            "  3-COOH               174-175                              28   "            "  3-COOK                                                    29   "            "  3-COOCH.sub.2 CCl.sub.3                                   30   4-CH.sub.3   H  5-COOH               192-196                              31   4-CH.sub.3   H  3-COOH               169-172                              32   "            Br 5-COOC.sub.2 H.sub.5                                      33   "            "  3-COOC.sub.2 H.sub.5                                      34   2,4-Cl.sub.2 H  5-COOC.sub.2 H.sub.5 56-60                                35   "            "  5-COOH               212-213                              36   2,4-Cl.sub.2 H  3-COOH               177-180                              37   "            "  5-COSC.sub.2 H.sub.5 Oil                                  38   "            "                                                                                  ##STR12##                                                39   "            Br 5-COOC.sub.2 H.sub.5 45-48                                40   "            "  3-COOC.sub.2 H.sub.5 91-102                               41   "            "  3-COOH               184-188                              42   "            "  5-COOH               175-177                              43   "            "  5-COO.sup.⊖ NH.sup.⊕ (C.sub.2 H.sub.4                              OH).sub.3            72-75                                44   "            "  5-COOK               > 260                                45   "            H  3-COOC.sub.2 H.sub.5 72-77                                46   "            H  5-COOCH.sub.2 CF.sub.2 CFHCF.sub.3                                                                  Oil                                  47   "            "  5-COOn-C.sub.12 H.sub.25                                                                            Oil                                  48   "            "  5-COOc-C.sub.6 H.sub.11                                                                             Oil                                  49   "            "  5-COO.sup.- Li.sup.+ >260                                 50   "            "  3-COO.sup.- K.sup.+  >260                                 51   "            "  5-COO.sup.- Ca.sub.1/2.sup.2+                                                                       178-180                              52   "            "  5-COO.sup.⊖ NH.sub.4.sup.⊕                                                              140-143                              53   "            Br 5-CONH.sub.2         118-120                              54   "            H  3-COO.sup.⊖ NH.sub.4.sup.⊕                                                              212-215                              55   "            Br 5-CN                 106-110                              56   "            "                                                                                  ##STR13##                                                57   "            "  5-CONHCH.sub.2 CH.sub.2 OH                                                                          49-50                                58   "            "  5-COOCH.sub.2 SCH.sub.3                                   59   "            Cl                                                                                 ##STR14##                                                60   "            "                                                                                  ##STR15##                                                61   2,4-Cl.sub.2 Cl                                                                                 ##STR16##                                                62   2,6-(CH.sub.3).sub.2                                                                        H  5-COOH               167-170                              63   "            "  5-COOC.sub.2 H.sub.5 101-108/0.02                         64   "            "  3-COO.sup.⊖+ NH(C.sub.2 H.sub.4 OH).sub.3                                                   83-86                                65   "            "  3-COO.sup.⊖ H.sub.3 N.sup.⊕c-C.sub.6                               H.sub.11             144-146                              66   "            Br                                                                                 ##STR17##                                                67   "            Br 5-COOCH.sub.2CF.sub.2 CHFCF.sub.3                         68   "            Cl 5-COOH                                                    69   "            Cl                                                                                 ##STR18##                                                70   2,6-(C.sub.2 H.sub.5).sub.2                                                                 H  5-COOC.sub.2 H.sub.5 119-123/0.01                         71   "            H  3-COOC.sub.2 H.sub.5 135-152/0.01                         72   "            H  5-COOH               142-146                              73   "            H  3-COOH               162-164                              74   "            Br 5-COOH               117-123                              75   "            "  3-COOH               136-141                              76   "            "  5-CONH.sub.2                                              77   "            Br 3-CONHOH                                                  78   "            "                                                                                  ##STR19##                                                79   "            Cl 5-COOH                                                    80   "            Cl 3-COOH                                                    81   "            Cl 5-COOn-C.sub.12 H.sub.25                                  82   2-CH.sub.3,6-C.sub.2 H.sub.5                                                                H  5-COOC.sub.2 H.sub.5 120-125/0.02                         82   "            "  3-COOC.sub.2 H.sub.5 140-144/0.02                         83   "            "  5-COOH               126-128                              84   "            "                                                                                  ##STR20##           137-140                              85   2-CH.sub.3,6-C.sub.2 H.sub.5                                                                Br 5-COOH                                                    86   "            Cl 5-COOC.sub.2 H.sub.5                                      87   "            "  3-COOH                                                    88   2,6-Cl.sub.2 H  5-COOH               207-208                              89   "            Br 5-COOH               187-192                              90   "            H  5-CONH.sub.2         117-118                              91   "            H                                                                                  ##STR21##           225                                  92   "            "  5-COSC.sub.2 H.sub.5 Oil                                  93   "            "  5-COO(CH.sub.2).sub.2 (CF.sub.2).sub.5CF.sub.3                                                      57-61                                94   "            "  5-COOn-C.sub.12 H.sub.25                                                                            44-48                                95   "            "  5-COOCH.sub.3        113-115                              96   "            "  5-CN                 94-96                                97   "            "  5-CONHCH.sub.3       220-223                              98   2,6-Cl.sub.2,3-NO.sub.2                                                                     "  5-COOC.sub.2 H.sub.5 Oil                                  99   "            "  5-COOH               178-179                              100  2,6-Cl.sub.2 "                                                                                  ##STR22##           176-177                              101  "            "                                                                                  ##STR23##                                                102  "            "                                                                                  ##STR24##                                                103  "            "                                                                                  ##STR25##                                                104  "            Br 5-COOC.sub.2 H.sub.5                                      105  "            Br 5-COOCH.sub.2 CF.sub.2 CHFCF.sub.3                        106  "            "                                                                                  ##STR26##                                                107  2,6-Cl.sub.2 Br                                                                                 ##STR27##                                                108  "            Cl 5-COOC.sub.2 H.sub.5                                      109  "            Cl 5-COOH                                                    110  "            Cl                                                                                 ##STR28##                                                111  "            "                                                                                  ##STR29##                                                112  "            H  3-COOH                                                    113  "            Br 3-COOC.sub.2 H.sub.5                                      114  "            Cl 3-COOCH.sub.3                                             115  3,4-Cl.sub.2 H  5-COOC.sub.2 H.sub.5 95-99                                116  "            "  3-COOC.sub.2 H.sub.5 93-96                                117  "            "  5-COOH               217-219                              118  "            "  5-COO.sup.⊖ NH.sup.⊕ (C.sub.2 H.sub.4                              OH).sub.3            137-140                              119  "            Br 5-COONC(CH.sub.3).sub.2                                   120  "            Cl 5-COOCH.sub.3                                             121  "            "  3-COOC.sub.2 H.sub.5                                      122  "            "  5-COOnC.sub.12 H.sub.25                                   123  3,5-Cl.sub.2 H  5-COOC.sub.2 H.sub.5 94-97                                124  "            "  5-COOH               229-232                              125  "            Br 5-COOH                                                    126  "            "  3-COOH                                                    127  "            Cl 5-COOC.sub.2 H.sub.5                                      128  2,3,4-Cl.sub.3                                                                              H  5-COOC.sub.2 H.sub.5 Oil                                  129  "            H  5-COOH               146                                  130  "            "  3-COOC.sub.2 H.sub.5 Oil                                  131  "            Br 5-COOH                                                    132  "            "  5-COOCH.sub.2 CF.sub.2 CHFCF.sub.3                                                                  --                                   133  2,3,4-Cl.sub.3                                                                              Br 5-COOCH.sub.2 CCl.sub.3                                   134  "            Cl 5-COOH                                                    135  2,4,6-Cl.sub.3                                                                              H  5-COOC.sub.2 H.sub.5 99-101                               136  "            "  3-COOC.sub.2 H.sub.5 114-115                              137  "            "  5-COOH                                                    138  "            "  3-COOH                                                    139  "            "  5-COOCH.sub.3                                             140  "            Br 5-COOH                                                    141  "            Br 3-COOH                                                    142  "            Cl 5-COOH                                                    143  "            "  3-COOH                                                    144  4-C.sub.6 H.sub.5                                                                           H  5-COOC.sub.2 H.sub.5 40-43                                145  "            "  3-COOC.sub.2 H.sub.5 89-92                                146  "            "  3-COOH               196-199                              147  "            H  5-COOnC.sub.12 H.sub.25                                   148  "            Br 5-COOH                                                    149  "            Br 3-COOH                                                    150  "            Cl 5-COOH                                                    151  "            "  3-COOH                                                    152  2-Cl         H  5-COOCH.sub.3        64-70                                153  "            "  5-COOC.sub.2 H.sub.5 Oil                                  154  "            "  5-COOH               157-161                              155  "            "  5-CONH.sub.2                                              156  "            "  5-CONHC.sub.2 H.sub.5                                     157  "            "  5-CONHNHC.sub.2 H.sub.5                                   158  "            "  5-COSC.sub.2 H.sub.5                                      159  "            "  5-COOnC.sub.12 H.sub.25                                   160  "            "  3-COOC.sub.2 H.sub.5                                      161  "            "  3-COSC.sub.2 H.sub.5                                      162  "            "  3-COOH                                                    163  "            "  3-COOnC.sub.4 H.sub.9                                     164  "            Br 5-COOC.sub.2 H.sub.5 Oil                                  165  2-Cl         Br 5-COSC.sub.2 H.sub.5                                      166  "            "  5-COOH                                                    167  "            "  3-COOC.sub.2 H.sub.5                                      168  "            Cl 5-COOC.sub.2 H.sub.5                                      169  "            Cl 5-COOH                                                    170  "            "  3-COOC.sub.2 H.sub.5                                      171  "            "  3-COSC.sub.2 H.sub.5                                      172  2,4-Cl.sub.25-OCH.sub.3                                                                     H  5-COOC.sub.2 H.sub.5 Oil                                  173  "            "  5-COOH               187-190                              174  "            "  3-COOC.sub.2 H.sub.5                                      175  "            Br 5-COSC.sub.2 H.sub.5                                      176  "            Cl 3-COOC.sub.2 H.sub.5                                      177  "            "  5-COOC.sub.2 H.sub.5                                      178  2,4-Cl.sub.25-CO.sub.2 C.sub.2 H.sub.5                                                      H  5-COOC.sub.2 H.sub.5 170-175/0.01                         179  "            "  5-COOCH.sub.3                                             180  "            "  5-COOc-C.sub.6 H.sub.11                                   181  "            "  3-COOC.sub.2 H.sub.5                                      182  "            Br 5-COOC.sub.2 H.sub.5                                      183  "            Cl 5-COOC.sub.2 H.sub.5                                      184  2-F4-Cl5-OCH.sub.3                                                                          H  5-COOC.sub.2 H.sub.5 155-162/0.01                         185  "            "  5-COOH               207-210                              186  "            "  5-CN                                                      187  "            "  5-CONH.sub.2                                              188  "            "  5-CNHNH.sub.2                                             189  "            "  3-COOC.sub.2 H.sub.5                                      190  "            "  3-COOH                                                    191  "            "  5-COONH.sub.4                                             192  "            "  5-COOK                                                    193  "            Cl 5-COOCH.sub.3                                             194  "            Cl 5-COOH                                                    195  "            "  3-COOCH.sub.3                                             196  "            Br 5-COOC.sub.4 H.sub.9                                      197  "            Br 5-COOCH.sub.2 CCH                                         198  2-F4-Cl5-OCH.sub.3                                                                          Br 3-COOC.sub.2 H.sub.5                                      199  4-CF.sub.3   H  5-COOC.sub.2 H.sub.5 53-54                                200  "            "  3-COOC.sub.2 H.sub.5 79-84                                201  4-CF.sub.32,6-(NO.sub.2).sub.2                                                              H  5-COOC.sub.2 H.sub.5 108-112                              202  "            "  3-COOC.sub.2 H.sub.5 138-142                              203  2,Cl4CF.sub.3                                                                               H  5-COOC.sub.2 H.sub.5 45-47                                204  "            "  5-COOH               149-150                              205  "            "  3-COOC.sub.2 H.sub.5 66-69                                206  3-CF.sub.3   H  5-COOC.sub.2 H.sub.5 87-101/0.01                          207  "            "  3-COOC.sub.2 H.sub.5 79-84                                208  "            "  5-COOH               136-138                              209  "            "  3-COO.sup.- (Ca.sup.2+).sub.1/2                                                                     244-261                              210  "            "  3-COOK               242                                  211  "            "  3-COONa              283                                  212  "            "  5-COO.sup.- Ca.sup.2+.sub.1/2                                                                       128-131                              213  "            "  3-COOc-C.sub. 6 H.sub.11                                                                            67-68                                214  "            Br 3-COOCC.sub.6 H.sub.11                                                                              86-91                                215  "            H  5-COOc-C.sub.6 H.sub.11                                                                             155-160/0.5                          216  "            Br 5-COOc-C.sub.6 H.sub.11                                                                             Oil                                  217  "            H  5-COO.sup.- K.sup.+  208-213                              218  "            "  5-COO.sup.- NH.sub.4.sup.+                                                                          65-71                                219  "            "  3-COO.sup.- NH.sub.4.sup.+                                                                          207-212                              220  "            "  3-COO.sup.- Li.sup.+ >250                                 221  "            "  5-CONH4-C.sub.6 H.sub.44-Cl                               222  "            "  5-C(NH.sub.2)NOCH.sub.3                                   223  "            "  5-COOCH.sub.2 CH.sub.2 c-C.sub. 6 H.sub.11                224  "            "  5-CSOC.sub.2 H.sub.5                                      225  "            "  3-COSC.sub.2 H.sub.5                                      226  "            Br 5-COSC.sub.2 H.sub.5                                      227  "            Br 3-COSC.sub.2 H.sub.5                                      228  "            Cl 5-COONHCOCH.sub.3                                         229  "            Cl 5-COO(CH.sub.2).sub.2 OC.sub.2 H.sub.2 CH.sub.3           230  "            "  5-COOCH.sub.2 C.sub.6 H.sub.5                             231  2,4-F.sub.2  H  5-COOC.sub.2 H.sub.5 102-106/0.02                         232  "            "  3-COOC.sub.2 H.sub.5 120-122/0.02                         233  "            "  5-COOH               196-199                              234  "            Br 5-COOH               165-168                              235  "            Br 3-COOC.sub.2 H.sub.5                                      236  "            Cl 5-COOH                                                    237  4-F          H  5-COOC.sub.2 H.sub.5 96-98                                238  4-F          H  3-COOC.sub.2 H.sub.5 44-49                                239  "            H  5-COOH               147-148                              240  "            H  5-COSC.sub.2 H.sub.5 62-65                                241  "            "  5-CSSC.sub.2 H.sub.5                                      242  "            "  5-CSN(CH.sub.3).sub.2                                     243  "            "  5-CONHNHCOC.sub.6 H.sub.5                                 244  "            "  3-COSC.sub.2 H.sub.5                                      245  "            "  3-CCNH.sub.2                                              246  "            Br 5-COOH               207 (decomp.)                        247  "            Br                                                                                 ##STR30##                                                248  "            Br 3-COOC.sub.2 H.sub.5 79-83                                249  "            Cl 5-COOH                                                    250  "            "  3-COOH                                                    251  4Br          H  5-COOC.sub.2 H.sub.5 63-65                                252  "            "  5-COOC.sub.2 H.sub.5 78-81                                253  "            "  5-COOH                                                    254  "            "  5-COSC.sub.2 H.sub.5                                      255  "            "  3-COSC.sub.2 H.sub.5                                      256  "            Br 5-COOH                                                    257  "            Cl 5-COOH                                                    258  "            "  3-COOH                                                    259  4-Cl         H  5-COOC.sub.2 H.sub.5 60-65                                260  "            "  3-COOH               169-174                              261  4-Cl         H  5-COOH               181-182                              262  "            "  3-COOC.sub.2 H.sub.5 71-74                                263  "            Br 3-COOC.sub.2 H.sub.5 107-109                              264  "            "  5-COOC.sub.2 H.sub.5 109-112                              265  "            H                                                                                  ##STR31##           152-154                              266  "            "                                                                                  ##STR32##           Oil                                  267  "            Br 5-COOH               196-198                              268  "            "  5-COO.sup.- HN.sup.+ (C.sub.2 H.sub.4 OH).sub.3                                                     112-114                              269  "            "                                                                                  ##STR33##           Oil                                  270  3-Cl         H  5-COOC.sub.2 H.sub.5 55-60                                271  "            "  5-COOH               205                                  272  3-Cl5-NO.sub.2                                                                              H  5-COOC.sub.2 H.sub.5 104-116                              273  "            "  3-COOC.sub.2 H.sub.5 141-147                              274  3-Cl         H  3-COOH                                                    275  "            "  3-COSC.sub.2 H.sub.5                                      276  "            Br 5-COOCH.sub.3                                             277  "            Cl 5-COOH                                                    278  "            "  3-COOH                                                    279  3-COOC.sub.2 H.sub.5                                                                        H  3-COOC.sub.2 H.sub.5 92-95                                280  "            "  5-COOC.sub.2 H.sub.5 85-87                                281  3-COO.sup.- HN.sup.+ (C.sub.2 H.sub.4 OH).sub.3                                             H  3-COO.sup.- HN.sup.+ (C.sub.2 H.sub.4 OH).sub.3                                                     Oil                                  282  3-COOH       H  5-COOH               236-238                              283  3-COOH       H  3-COOH               240-243                              284  4-COOH       H  5-COOH               >260                                 285  "            "  3-COOH               >260                                 286  3-OCF.sub.2 CHF.sub.2                                                                       H  5-COOc-C.sub.6 H.sub.11 × H.sub.2 SO.sub.4                                                    Oil                                  287  "            "  5-COOC.sub.2 H.sub.5 Oil                                  288  "            H  3-COOC.sub.2 H.sub.5 47-51                                289  "            "  5-COOc-C.sub.6 H.sub. 11                                                                            Oil                                  290  "            "  3-COOc-C.sub.6 H.sub.11                                                                             Oil                                  291  3-OCF.sub.2 CHF.sub.2                                                                       H  5-COOi-borneyl       Oil                                  292  "            "  3-COOi-borneyl       88-90                                293  "            Br 5-COOc-C.sub.6 H.sub.11                                                                             Oil                                  294  "            "  3-COOC.sub.2 H.sub.5 62-64                                295  "            "  5-COOC.sub.2 H.sub.5 Oil                                  296  "            Cl 5-COOC.sub.2 H.sub.5                                      297  "            "  3-COOC.sub.2 H.sub.5                                      298  3-OCF.sub.2 CHFCF.sub.3                                                                     H  5-COOC.sub.2 H.sub.5 Oil                                  299  "            "  5-COOH               129-131                              300  "            "  5-COSC.sub.2 H.sub.5                                      301  "            H  5-CN                                                      302  "            "  3-COOC.sub.2 H.sub.5 44-46                                303  "            "  3-COOH               104 (decomp.)                        304  "            H  3-COSC.sub.2 H.sub.5                                      305  "            Br 5-COOC.sub.2 H.sub.5                                      306  "            "  3-COOC.sub.2 H.sub.5                                      307  3-OCF.sub.3  H  5-COOC.sub.2 H.sub.5 Oil                                  308  "            H  3-COOC.sub.2 H.sub.5 55-58                                309  "            Cl 5-COOC.sub.2 H.sub.5                                      310  4-OCF.sub.3  H  5-COOC.sub.2 H.sub.5 Oil                                  311  "            H  5-COOH               157-158                              312  "            "  3-COOC.sub.2 H.sub.5 68-71                                313  "            Cl 5-COOC.sub.2 H.sub.5 98-99                                314  3-NO.sub.2   H  5-COOC.sub.2 H.sub.5 76-82                                315  3-OCHF.sub.2 H  5-COOC.sub.2 H.sub.5                                      316  "            "  5-COOH                                                    317  2,4-F.sub.2, 3,5-Cl.sub.2                                                                   H  5-COOC.sub.2 H.sub.5                                      318  "            "  3-COOC.sub.2 H.sub.5                                      319  "            "  5-COOH                                                    320  "            Br 5-COOC.sub.2 H.sub.5                                      321  "            Cl 3-COOC.sub.2 H.sub.5                                      322  4-OC.sub.6 H.sub.5                                                                          H  5-COOC.sub.2 H.sub.5                                      323  "            "  5-COOH                                                    324  4-OC.sub.6 H.sub.5                                                                          H  3-COOC.sub.2 H.sub.5                                      325  4-OC.sub.6 H.sub.42-Cl                                                                      H  5-COOC.sub.2 H.sub.5                                      326  4-NH.sub.2   H  3-COOC.sub.2 H.sub.5 84-87                                327  3-NHCOCH.sub.3                                                                              H  5-COOC.sub.2 H.sub.5                                      328  3-SH         H  5-COOC.sub.2 H.sub.5                                      329  3-SC.sub.6 H.sub.5                                                                          H  5-COOC.sub.2 H.sub.5                                      330  3-SO.sub.2C.sub.6 H.sub.5                                                                   H  5-COOCH.sub.3                                             331  2,6-Cl.sub.24-CF.sub.3                                                                      H  5-COOC.sub.2 H.sub.5 69-71                                332  "            H  5-CONH.sub.2         171-173                              333  "            H  5-CN                 67-69                                334  "            H  3-COOC.sub. 2 H.sub.5                                                                               112-115                              335  4-NO.sub.2   H  3-COOC.sub.2 H.sub.5 159-161                              336  3-C.sub.2 H.sub.5                                                                           H  5-COOC.sub.2 H.sub.5 Oil                                  337  "            H  3-COOC.sub.2 H.sub.5 Oil                                  338  3-OCF.sub.3  H  5-COOH               113-115                              339  4-OCF.sub.3  Br 3-COOC.sub.2 H.sub.5 92-97                                340  4-F3-NO.sub.2                                                                               H  5-COOC.sub.2 H.sub.5 74-76                                341  "            H  5-COOH               178 decomp.                          342  2,4,6-Cl.sub.3                                                                              Br 5-COOC.sub.2 H.sub.5 64-65                                343  2,4,6-Cl.sub.33-CH.sub.3                                                                    H  5-COOC.sub.2 H.sub.5 38-42                                344  3-F          H  5-COOC.sub.2 H.sub.5 Oil                                  345  3-F          H  3-COOC.sub.2 H.sub.5 Oil                                  346  2-CF.sub.3   H  5-COOC.sub.2 H.sub.5 Oil                                  347  "            H  5-COOH               130-132                              348  2-Cl5-CF.sub.3                                                                              H  5-COOC.sub.2 H.sub.5 Oil                                  349  "            H  3-COOC.sub.2 H.sub.5 Oil                                  350  3,5-(CF.sub.3).sub.2                                                                        H  5-COOC.sub.2 H.sub.5 63-67                                351  "            H  3-COOC.sub.2 H.sub.5 108-110                              352  "            H  5-COOH               124-126                              353  2,4-Cl.sub.26-CH.sub.3                                                                      H  5-COOC.sub.2 H.sub.5 63-65                                354  F.sub.5      H  5-COOC.sub.2 H.sub.5 Oil                                  355  "            H  3-COOC.sub.2 H.sub.5 Oil                                  356  "            H  5-COOH               146-150                              357  4-NHCHC(CN).sub.2                                                                           H  3-COOC.sub.2 H.sub.5 >220                                 358                                                                                  ##STR34##   H  3-COOC.sub.2 H.sub.5 115-117                              359  3-NHCOCOOC.sub.2 H.sub.5                                                                    H  5-COOC.sub.2 H.sub.5 50-54                                360  2,4-Cl.sub.25NO.sub.2                                                                       Br 5-CONH.sub.2         204-206                              361  2,3,6-Cl.sub.33NO.sub.2                                                                     H  5-COOC.sub.2 H.sub.5 94-101                               362  "            H  5-COOH               185-187                              363  "            H  5-COOK               189-192                              364  3-CF.sub.3   H  5-CON(C.sub.2 H.sub.5).sub.2                                                                        66-68                                365  "            H  5-CONHCH.sub.2 CH(OCH.sub.3).sub.2                                                                  92-94                                366  "            H  5-CONH.sub.2         119-121                              367  "            H  5-CONHCH.sub.3       72-77                                368  "            H  5-CONHCH.sub.2 CH(C.sub.2 H.sub.5)n-C.sub.4 H.sub.9                                                 Oil                                  369  "            H  5-CONHc-C.sub.6 H.sub.11                                                                            134 decomp.                          370  2-Cl4-CF.sub.3                                                                              Br 5-COOC.sub.2 H.sub.5 Oil                                  371  "            Br 3-COOC.sub.2 H.sub.5 38-41                                372  "            H                                                                                  ##STR35##           Oil                                  373  "            H                                                                                  ##STR36##           104-106                              374  2-Cl5-NO.sub.2                                                                              H  5-COOC.sub.2 H.sub.5 78-82                                375  2-Cl         H  5-CO(benzimidazol-1-yl)                                                                             117-121                              376  "            H                                                                                  ##STR37##           125-126                              377  5-NO.sub.22-SC.sub.6 H.sub.5                                                                H  5-COOC.sub.2 H.sub.5 Oil                                  378  5-Cl2-NO.sub.2                                                                              H  5-COOC.sub.2 H.sub.5 90-94                                379  3-Cl4-NO.sub.2                                                                              H  5-COOC.sub.2 H.sub.5 109-113                              380  2,4-(SC.sub.6 H.sub.5).sub.25-NO.sub.2                                                      H  5-COOCH.sub.3        145-148                              381  4-OCH.sub.3  H  5-COOC.sub.2 H.sub.5 Oil                                  382  "            H  3-COOC.sub.2 H.sub.5 Oil                                  383  "            H  5-COOH               170-172                              384  "            H  3-COOH               185-187                              385  2,3,5,6-F.sub.4                                                                             H  5-COOC.sub.2 H.sub.5 57-60                                386  "            H  5-COOH               128-130                              387  "            H  5-CON(C.sub.2 H.sub.5).sub.2                                                                        80-83                                388  "            H  5-COOn-C.sub.6 H.sub.13                                                                             Oil                                  389                                                                                  ##STR38##   H  5-COOC.sub.2 H.sub.5 96-101                               390  3-NO.sub.24-OC.sub.6 H.sub.5                                                                H  5-COOC.sub.2 H.sub.5 52-54                                391  "            H  5-COOH               178-181                              392  4-NHSO.sub.2 CH.sub.3                                                                       H  3-COOC.sub.2 H.sub.5 150-155                              393  3-Cl4-F      H  5-COOC.sub.2 H.sub.5 84-87                                394  "            H  3-COOC.sub.2 H.sub.5 122-125                              395  "            H  5-COOH               >225                                 396  4-F3-CF.sub.3                                                                               "  3-COOC.sub.2 H.sub.5 24-29                                397  4-N(CH.sub.3).sub.23-CF.sub.3                                                               H  5-COOC.sub.2 H.sub.5 Oil                                  398  "            H  3-COOC.sub.2 H.sub.5 Oil                                  399  3-Cl2,6-(C.sub.2 H.sub.5)                                                                   H  5-COOC.sub.2 H.sub.5 Oil                                  400  "            H  3-COOC.sub.2 H.sub.5 Oil                                  401  "            H  5-COOH               145-147                              402  "            Br 5-COOC.sub.2 H.sub.5 Oil                                  403  2,4-Br.sub.2 H  5-COOC.sub.2 H.sub.5 Oil                                  404  "            H  3-COOC.sub.2 H.sub.5 103-105                              405  "            H  5-COOH               217-219                              406  "            Br 5-COOC.sub.2 H.sub.5 Oil                                  407  2,4-Cl.sub.2 H  3-CONHSO.sub.2 CH.sub.3                                                                             155-159                              408  "            H  3-COOCH.sub.3        105-107                              409  "            H  3-COOCH.sub.2 CCH    101-103                              410  "            H  5-COOCH.sub.2 CCH    Oil                                  411  "            H  5-COOCH(CH.sub.3).sub.2                                                                             Oil                                  412  "            H  5-COOCH.sub.2 CCl.sub.3                                                                             Oil                                  413  "            H  5-COONC(CH.sub.3).sub.2                                                                             87-89                                414  "            H  5-COOCH(CF.sub.3).sub.2                                                                             Oil                                  415  "            H  5-CN                 70-71                                416  "            H  5-COOCH.sub.2 Si(CH.sub.3).sub.3                                                                    Oil                                  417  "            H  3-COOCH.sub.2 Si(CH.sub.3).sub.3                                                                    51-54                                418  "            H                                                                                  ##STR39##           Oil                                  __________________________________________________________________________

Biological examples A. Growth regulation 1. Growth inhibition in cereals

In dish experiments in a greenhouse, young cereal plants (wheat, barley and rye) at the 3-leaf stage were sprayed with compounds according to the invention at various active ingredient concentrations (kg/ha) until dripping wet.

When untreated control plants had reached a growth height of about 55 cm, the increase in growth in all plants was measured and the growth inhibition calculated in % of additional growth of the control plants. In addition, the phytotoxic action of the compounds was observed, 100% denoting cessation of growth and 0% denoting growth corresponding to the untreated control plants. It was apparent that the compounds have very good growth-regulating properties. The results are collated in the following table.

                  TABLE                                                            ______________________________________                                         Compounds          Growth inhibition                                           according                                                                              Application                                                                               (%)             Phytotoxic                                  to Ex. No.                                                                             conc., kg/ha                                                                              Wheat   Barley                                                                               Rye   action                                  ______________________________________                                         17      2.5        15      22    19    no                                              1.25       11      16    14    damage                                  34      "          14      21    17    no                                              "          10      14    11    damage                                  42      "          25      38    22    no                                              "          22      23    17    damage                                  43      "          24      38    23    no                                              "          21      22    16    damage                                  44      "          24      37    23    no                                              "          20      23    17    damage                                  52      "          22      31    21    no                                              "          18      26    17    damage                                  53      "          16      21    19    no                                              "          10      15    13    damage                                  55      "          14      20    21    no                                              "          9       13    14    damage                                  62      "          18      21    14    no                                              "          14      15    12    damage                                  72      "          14      17    14    no                                              "          12      15    9     damage                                  83      "          19      22    19    no                                              "          12      14    13    damage                                  88      "          23      36    29    no                                              "          18      28    20    damage                                  89      "          26      39    24    no                                              "          21      24    19    damage                                  90      "          14      21    18    no                                              "          10      16    13    damage                                  92      "          17      22    19    no                                              "          11      17    14    damage                                  115     2.5        16      21    19    no                                              1.25       11      17    14    damage                                  116     "          17      22    19    no                                              "          12      17    13    damage                                  117     "          19      24    21    no                                              "          14      19    16    damage                                  128     "          16      21    17    no                                              "          11      16    13    damage                                  129     "          22      31    22    no                                              "          18      25    19    damage                                  135     "          15      19    18    no                                              "          11      16    14    damage                                  140     "          20      24    22    no                                              "          14      19    17    damage                                  153     "          20      23    21    no                                              "          13      19    16    damage                                  154     "          22      27    24    no                                              "          15      23    19    damage                                  178     "          14      19    19    no                                              "          12      14    15    damage                                  185     "          13      18    15    no                                              "          9       13    9     damage                                  204     "          16      19    17    no                                              "          11      16    15    damage                                  206     "          15      20    18    no                                              "          13      13    14    damage                                  208     "          20      35    22    no                                              "          14      24    17    damage                                  217     "          17      27    22    no                                              "          14      22    17    damage                                  218     "          18      27    19    no                                              "          15      23    16    damage                                  246     "          25      38    27    no                                              "          21      29    24    damage                                  267     "          21      30    22    no                                              "          17      23    17    damage                                  269     "          24      37    27    no                                              "          21      28    23    damage                                  295     2.5        19      29    22    no                                              1.25       16      24    17    damage                                  356     "          19      28    21    no                                              "          15      22    16    damage                                  366     "          17      21    17    no                                              "          11      16    13    damage                                  405     "          24      37    23    no                                              "          21      28    18    damage                                  413     "          19      26    18    no                                              "          13      19    13    damage                                  ______________________________________                                    

2. Growth inhibition in paddy rice

Rice plants were raised in pots in a greenhouse to the 3-leaf stage, and then treated with the compounds according to the invention. The substances were applied both by spraying and in the water.

3 weeks after treatment, the additional growth was measured in all plants and the growth inhibition calculated in % of the additional growth in the control plants. In addition, a possible phytotoxic action of the compounds was looked for.

The growth inhibition was determined as a percentage, 100% denoting cessation of growth and 0% denoting growth corresponding to that of the untreated control plants.

The results are collated in the following table.

                  TABLE                                                            ______________________________________                                         Compounds             Growth                                                   according Application inhibition Phytotoxic                                    to Ex. No.                                                                               conc., kg/ha                                                                               (%)        action                                        ______________________________________                                         42        2.5         26         no                                                      1.25        24         damage                                                  0.62        20                                                       43        "           27         no                                                      "           24         damage                                                  "           19                                                       62        "           19         no                                                      "           15         damage                                                  "            8                                                       83        "           21         no                                                      "           16         damage                                                  "           13                                                       88        "           19         no                                                      "           16         damage                                                  "           12                                                       178       "           22         no                                                      "           17         damage                                                  "           15                                                       206       "           25         no                                                      "           19         damage                                                  "           17                                                       208       "           32         no                                                      "           27         damage                                                  "           21                                                       218       "           26         no                                                      "           20         damage                                                  "           17                                                       219       "           27         no                                                      "           21         damage                                                  "           17                                                       246       "           29         no                                                      "           25         damage                                                  "           21                                                       ______________________________________                                    

3. Growth inhibition in soybeans

Soybeans, about 10 cm tall, were sprayed with the active ingredient formulations until dripping wet. Assessment was carried out after 3 weeks.

The growth inhibition was determined as a percentage, 100% denoting cessation of growth and 0% denoting growth corresponding to that of the untreated control plants.

                  TABLE                                                            ______________________________________                                         Compounds             Growth                                                   according Application inhibition Phytotoxic                                    to Ex. No.                                                                               conc., ka/ha                                                                               (%)        action                                        ______________________________________                                         35        2.5         22         no damage                                     88        2.5         25         "                                             89        2.5         27         "                                             42        2.5         26         "                                             43        2.5         24         "                                             44        2.5         26         "                                             ______________________________________                                    

B. Safener action EXAMPLE 1

Cereals, preferably wheat, were raised in 9 cm diameter plastic pots in a greehouse to the 3-4 leaf stage and then treated, in the post-emergence method, simultaneously with the compounds according to the invention and the herbicides tested. In this treatment, the herbicides and the compounds of the formula I were applied in the form of aqueous suspensions or emulsions at a water application rate of approximately 800 l/ha. 3-4 weeks after treatment, the plants were assessed visually for any tyupe of damage caused by the herbicides applied, the extent of lasting growth inhibition, in particular, being taken into account.

The results from Table V show that the compounds according to the invention are able to effectively reduce severe herbicide damage to the crop plants.

Even in the case of considerable overdosing of the herbicide, severe damage occurring in the crop plant is greatly reduced, and less severe symptoms of damage are completely eliminated. Mixtures of herbicides and the compounds according to the invention are therefore suitable in an excellent fashion for selective combating of weeds in cereal crops.

EXAMPLE 2

Cereals and the two weed grasses Avena fatua and Alopecurus myosuroides were sown in sandy loam in 9 cm diameter plastic pots, raised in a greenhouse under ideal growth conditions to the 3-4 leaf stage or until commencement of tillering, and treated with mixtures of the compounds according to the invention and herbicides. In this treatment, the preparations were applied in the form of aqueous suspensions or emulsions at a water application rate of approximately 300-600 l/ha.

3-4 weeks after application, the test plants were assessed visually for growth changes and damage compared to untreated controls and controls treated with the herbicides alone.

The results from Table V show that the compounds according to the invention have very good safener properties in the case of cereal plants and are thus able to effectively prevent herbicide damage without impairing the actual herbicidal action against weed grasses.

Mixtures of herbicides and the compounds according to the invention can thus be employed for selective combating of weeds.

Safener action of the compounds according to the invention. Damage to crop plants in %.

                  TABLE                                                            ______________________________________                                                        herbicidal action                                               Example No.      TA       HV                                                   ______________________________________                                         H.sub.1          85      80                                                    H.sub.1 + 16     40      --                                                    H.sub.1 + 17     45      --                                                    H.sub.1 + 26     40      --                                                    H.sub.1 + 27     40      --                                                    H.sub.1 + 30     50      --                                                    H.sub.1 + 34     40      --                                                    H.sub.1 + 45     20      35                                                    H.sub.1 + 46     30      40                                                    H.sub.1 + 47     30      --                                                    H.sub.1 + 48     30      --                                                    H.sub.1 + 49     --      50                                                    H.sub.1 + 50     30      --                                                    H.sub.1 + 51     --      50                                                    H.sub.1 + 54     --      50                                                    H.sub.1 + 65     30      --                                                    H.sub.1 + 84     40      55                                                    H.sub.1 + 96     30      --                                                    H.sub.1 + 98     50      --                                                    H.sub.1 + 99     --      40                                                    H.sub.1 + 128    --      50                                                    H.sub.1 + 136    20      --                                                    H.sub.1 + 153    30      65                                                    H.sub.1 + 154    40      --                                                    H.sub.1 + 164    40      --                                                    H.sub.1 + 178    50      --                                                    H.sub.1 + 201    30      --                                                    H.sub.1 + 204    40      35                                                    H.sub.1 + 205    50      30                                                    H.sub.1 + 209    50      --                                                    H.sub.1 + 210    35      --                                                    H.sub.1 + 211    40      55                                                    H.sub.1 + 218    --      40                                                    H.sub.1 + 219    35      --                                                    H.sub.1 + 220    50      --                                                    H.sub.1 + 237    40      --                                                    H.sub.1 + 238    30      --                                                    H.sub.1 + 239    50      --                                                    H.sub.1 + 240    50      --                                                    H.sub.1 + 246    40      30                                                    H.sub.1 + 251    30      --                                                    H.sub.1 + 252    30      40                                                    H.sub.1 + 259    30      --                                                    H.sub.1 + 260    40      50                                                    H.sub.1 + 261    50      40                                                    H.sub.1 + 262    40      45                                                    H.sub.1 + 265    --      50                                                    H.sub.1 + 269    --      50                                                    H.sub.1 + 270    60      50                                                    H.sub.1 + 271    20      45                                                    H.sub.1 + 279    50      --                                                    H.sub.1 + 280    50      --                                                    H.sub.1 + 286    10      40                                                    H.sub.1 + 288    30      40                                                    H.sub.1 + 289    40      --                                                    H.sub.1 + 293    50      --                                                    H.sub.1 + 294    40      --                                                    H.sub.1 + 295    50      --                                                    H.sub.1 + 298    --      50                                                    H.sub.1 + 311    40      40                                                    H.sub.1 + 312    40      50                                                    H.sub.1 + 314    40      --                                                    H.sub.1 + 331    40      --                                                    H.sub.1 + 334    20      50                                                    H.sub.1 + 340    40      --                                                    H.sub.1 + 342    40      --                                                    H.sub.1 + 343    40      --                                                    H.sub.1 + 344    40      --                                                    H.sub.1  + 346   40      --                                                    H.sub.1 + 347    40      --                                                    H.sub.1 + 348    30      --                                                    H.sub.1 + 349    20      50                                                    H.sub.1 + 350    40      50                                                    H.sub.1 + 352    --      50                                                    H.sub.1 + 353    40      --                                                    H.sub.1 + 371    40      35                                                    H.sub.1 + 373    45      60                                                    H.sub.1 + 375    35      --                                                    H.sub.1 + 389    20      50                                                    H.sub.1 + 391    40      --                                                    H.sub.1 + 394    40      --                                                    H.sub.1 + 395    40      --                                                    H.sub.1 + 407    40      35                                                    H.sub.1 + 408    35      35                                                    H.sub.1 + 409    40      40                                                    H.sub.1 + 410    60      50                                                    H.sub.1 + 415    40      --                                                    H.sub.1 + 416    30      60                                                    H.sub.1 + 417    40      40                                                    ______________________________________                                    

Explanations and abbreviations

Dosages of the mixture components:

H₁ :2.0 kg of a.i./ha (TA) 0.3 kg of a.i./ha (HV)

Safener:2.5 kg of a.i./ha

H₁ =fenaxaprop-ethyl

TA=Triticum aestivum

HV=Hordeum vulgare 

We claim:
 1. A compound of formula I, and agriculturally acceptable salts and quaternization products thereof, ##STR40## in which: R, in each case independently of one another, is halogen, hydroxyl, cyano, nitro, (C₁ -C₄)alkyl, halo(C₁ -C₄)alkyl, (C₁ -C₄)alkoxy(C₁ -C₄)alkyl, (C₁ -C₄)alkoxy, (C₁ -C₆)alkoxy(C₁ -C₄)alkoxy, halo(C₁ -C₆)alkoxy, (C₁ -C₄)alkylthio, halo(C₁ -C₄)alkylthio, carboxyl, (C₁ -C₄)alkoxycarbonyl, (C₁ -C₄)alkylsulfinyl, halo(C₁ -C₄)alkylsulfinyl, (C₁ -C₄)alkylsulfonyl, halo(C₁ -C₄)alkylsulfonyl, (C₁ -C₄)alkylsulfonyloxy, halo(C₁ -C₄)alkylsulfonyloxy, phenyl, halophenyl, phenoxy or halophenoxy,X is oriented in the 3- or 5-position of the pyrazole ring and is a radical of the formula ##STR41## Z is O or S; U is O, S or N-R⁶ ; R¹ is hydrogen, (C₁ -C₁₂)alkyl, (C₁ -C₁₂)alkyl which is monosubstituted or polysubstituted by halogen and/or monosubstituted or disubstituted by hydroxyl, (C₁ -C₆)alkoxy, (C₁ -C₄)alkoxy-(C₁ -C₄)alkoxy, (C₁ -C₄)alkylthio, (C₁ -C₄)alkylsulfinyl, (C₁ -C₄)alkylsulfonyl, mono- or di-(C₁ -C₄ -alkyl)amino, cyano, aminocarbonyl, (C₁ -C₄)alkylcaronyl, (C₁ -C₄ -alkoxy)carbonyl, cyclo(C₃ -C₇)alkyl, tri(C₁ -C₄)alkylsilyl, benzyloxy, benzyloxyethoxy, phenyl, phenyl which is substituted by halogen or (C₁ -C₄)alkyl, phenoxy or phenylthio which both are unsubstituted or substituted by halogen or (C₁ -C₄)alkyl; by oxiranyl, tetrahydrofuryl, triazolyl, pyridinyl, imidazolyl, carboxyl, carboxylate with a cation which can be employed for agriculture, or the --O--N═C(CH₃)₂ radical; or is (C₃ -C₆)alkenyl, halo(C₃ -C₆)alkenyl, cyclo(C₃ -C₇)alkyl which is unsubstituted or substituted by halogen or (C₁ -C₄)alkyl; cyclo(C₅ -C₇)alkenyl which is unsubstituted or substituted by halogen or (C₁ -C₄)alkyl; or is (C₃ -C₆)alkynyl, 1,2-epoxyprop-3-yl, phenyl or phenyl which is monosubstituted or disubstituted by halogen, nitro, cyano, (C₁ -C₄)alkyl, (C₁ -C₄ -alkoxy)carbonyl or (C₁ -C₄)alkoxy; or is (C₁ -C₄ -alkyl)carbonyl, phenylcarbonyl with a phenyl ring which is unsubstituted or substituted by halogen, nitro, cyano or (C₁ -C₄)alkyl, or is a radical of the formula ##STR42## or an agriculturally acceptable cation; R² is (C₁ -C₁₂)alkyl or (C₁ -C₁₂)alkyl which is monosubstituted or disubstituted by (C₁ -C₄)alkoxyethoxy, cyclo(C₃ -C₆)alkyl, benzyloxy, phenyl, phenoxy, (C₁ -C₄)alkylthio, (C₁ -C₄ -alkoxy)carbonyl, carboxyl or carboxylate with an agricuturally acceptable cation; R³, in each case independently of one another, is (C₁ -C₆)alkyl, phenyl or (C₃ -C₆)alkenyl; R⁴ is hydrogen, (C₁ -C₁₂)alkyl or (C₁ -C₁₂)alkyl which is monosubstituted or disubstituted by (C₁ -C₆)alkoxy, (C₁ -C₄)alkoxyethoxy, hydroxyl, hydroxyimino, (C₁ -C₄)alkoxyimino, halogen; cyclo (C₃ -C₆)alkyl, benzyloxy, cyano, aminocarbonyl, carboxyl, (C₁ -C₄ -alkoxy)carbonyl, formyl, phenyl or phenoxy, or is phenyl or phenyl which is monosubstituted or disubstituted by halogen, nitro, cyano, (C₁ -C₄)alkyl or (C₁ -C₄)alkoxy; or is (C₃ -C₆)alkenyl, (C₃ -C₆)cycloalkyl, or a radical of the formula:

    --NR.sup.3 R.sup.12, --O--R6, --NH--CONH.sub.2, --NH--CS--NH.sub.2 or --SO.sub.2 R.sup.13 or

R³ and R⁴, together with the nitrogen atom to which they are bound, are a ring selected from the group consisting of piperidine, morpholine, 2,6-dimethyl morpholine, piperazine, triazole, imidazole, pyrazole, thiazole and benzimidazole; R⁵ is hydrogen, (C₁ -C₆)alkyl or phenyl, or in the case where X is --CS--OR⁵, is an agriculturally acceptable cation; R⁶, in each case independently of one another, is hydrogen, (C₁ -C₄)alkyl or benzyl; R⁷, in each case independently of one another, is hydrogen, (C₁ -C₁₂)alkyl which is unsubstituted or substituted by phenyl which is unsubstituted or substituted by halogen, nitro, cyano, (C₁ -C₄)alkyl or (C₁ -C₄)alkoxy, by hydroxyl, cyano, (C₁ -C₄ -alkoxy)carbonyl, (C₁ -C₄)alkylthio, (C₁ -C₄)alkoxy, cyclo(C₅ -C₇)alkyl or benzyloxy, or is (C₃ -C₆)alkenyl, halo(C₃ -C₆)alkenyl, (C₃ -C₆)alkynyl, cyclo(C₅ -C₈)alkyl, cyclo(C₅ -C₆)alkenyl, (C₁ -C₆ -alkyl)carbonyl, halo(C₁ -C₆ -alkyl)carbonyl, ((C₁ -C₆ -alkyl)amino)carbonyl, benzoyl, halobenzoyl or methylbenzoyl; R⁸, in each case independently of one another, is (C₁ -C₆)alkyl which is unsubstituted or substituted by phenyl, cyclo(C₅ -C₇)alkyl, (C₁ -C₄)alkoxy, (C₁ -C₄)alkylthio or halogen, or two radicals R⁸, together with Z and the carbon atom to which they are bound, are a 5- or 6-membered saturated heterocyclic ring which is unsubstituted or substituted by (C₁ -C₄)alkyl, hydroxy(C₁ -C₄)alkyl, halo(C₁ -C₄)alkyl or phenyl; R⁹, in each case independently of one another, is hydrogen, halogen, (C₁ -C₄)alkyl, nitro or cyano; R¹⁰, in each case independently of one another, is hydrogen, (C₁ -C₆)alkyl which is unsubstituted or substituted by (C₁ -C₄)alkoxy, triazolyl or imidazolyl; or is cyclo-(C₃ -C₆)alkyl, (C₃ -C₆)alkenyl, phenyl or benzyl, or in the radical --N═C(R¹⁰)₂ both radicals R¹⁰, together with the carbon atom to which they are bound, are a cyclo(C₅ -C₇)alkyl which is unsubstituted or substituted by methyl or halogen; R¹¹ is (C₁ -C₄)alkyl, phenyl, (C₁ -C₆ -alkyl)carbonyl, benzyl, benzoyl, halobenzyl, halobenzoyl or methylbenzoyl; R¹² is hydrogen, (C₁ -C₄)alkyl, formyl (C₁ -C₆ -alkyl)carbonyl, benzoyl, halobenzoyl, methylbenzoyl or trihaloacetyl; R¹³ is (C₁ -C₄)alkyl, phenyl or methylphenyl;n is an integer from 0 to 5; p is an integer from 0 to 4; and q is an integer from 0 to
 6. 2. The compound 1-(2,4-dichlorophenyl)-pyrazole-5-carboxylic acid ethyl ester.
 3. The compound 1-(3-trifluormethylphenyl)-pyrazole-5-carboxylic acid cyclohexylester.
 4. The compound 1-(2,4-dichlorophenyl)-pyrazole-5-carboxylic acid.
 5. The compound 1-(2,4-dichlorophenyl)-pyrazole-5-carboxylic acid-thioethylester.
 6. The compound 1-(2,6-diethylphenyl)-pyrazole-5-carboxylic acid.
 7. The compound 1-(3-trifluormethylphenyl)-pyrazole-5-carboxylic acid.
 8. A plant growth regulating composition comprising a plant growth regulating effective amount of a compound of formula I as claimed in claim 1 and an inert carrier.
 9. A composition for protecting crop plants against phytotoxic side effects of a herbicide comprising a phytotoxic side effect protecting effective amount of a compound of formula I as claimed in 1 and an inert carrier.
 10. A method for regulating plant growth, wherein a plant growth regulating effective amount of a compound of formula I as claimed in claim 1 is applied to a plant or to a cultivated area.
 11. A method for protecting crop plants against phytotoxic side effects of a herbicide, wherein a phytotoxic side effect protecting effective amount of a compound of formula I as claimed in claim 1 is applied to the crop plants or a cultivated area before, after or at the same time the herbicide is applied.
 12. The method as claimed in claim 11, wherein the herbicide is selected from the group consisting of phenoxyphenoxy-, quinolyloxy-, quinoxalyloxy-, pyridyloxy-, benzoxazolyloxy-, and benzothiazolyloxyphenoxy-carboxylates.
 13. A method as claimed in claim 11, wherein the compound of formula I and said herbicide are applied in a ratio ranging between 1:10 and 10:1.
 14. A method as claimed in claim 13, wherein said ratio ranges from 2:1 and 1:10. 